Auxiliary jack



N. S. SNYDER.

. AUXILIARY JACK.

APPLICATION FILED FEB.24, 1920.

Patented Feb. 1, 1921.

UNITED STATES PATENT OFFICE.

NEVILLE s; SNYDER, or BAYARD, NEBRASKA.

AUXILIARY JACK.

To all whom it may concern:

Be it known that I, NEVILLE S. SNYDER, a citizen of the United States, residing at Bayard, in the county of Moi-rill and State of Nebraska, have invented certain new and useful Improvements in Auxiliary Jacks, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates {to jacking appliances, and particularly to What may. be

' termed an auxiliary jack designed to be used as an adjunct to or with a regular jack.

The general object of my inventionis to provide an auxiliary jack in the form of a blocking device which is adapted to be used in connection with a regular jack for blocking up or supporting a motor car after the removal of the regular jack, and more particularly the invention contemplates the pro-j vision of an auxiliary jack which may be used in connection with a regular jack for the purpose of spreadingor expanding demountable rims or for the purpose of contracting demountable rims. l

A further object is to so construct this jack that it may be used in connection with demountable rimso-f different widths.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings, wherein Figure 1 is a perspective view of an auxiliary jack constructed in accordance with my invention;

Fig. 2 is a cross sectional view through the standard;

Fig. 3 is a plan view showing the use of the auxiliary jack in expanding the wheel rim;

Fig. 4: is a fragmentary plan view showing the manner in which the regular jack is used in connection with the auxiliary jack where the rim is relatively large;

Referring to Fig. 1 it will be seen that my auxiliary jack or blocking device comprises a standard which is I-shaped in cross section and designated 10. This standard at one end is engaged with a web 11 which may be considered the foot or base of the device and rests upon the floor or ground under some circumstances, while its other end is engaged with a late 12 constituting the head of the jack. he plates 11 and 12 forming the base and head of the jack may, and preferably will be, cast or formed integral with the Specification of Letters Patent, Patent d F b 1 1921 Application filed February 24, 1920. Serial No. 360,851.

I -shaped standard 10, and the head and foot will referably be braced from the central stan ard by diagonal bracing webs 13, which likewise may be, and preferably are, integral with the standard and the head and foot respectively. y i

As seen in Fig. 1, the head and base plates or webs do not extend out equally on each side beyond the standard, but the standard is unequally disposed between the ends of the head and base and to one side of the middle-of the head and base so that the head projects at one side of the standard a relatively short distance, as at X and at the other side a relatively long distance, as at Z, and the same is trueofthe base or foot. That portion of the head immediately over the standard is preferably sunken or depressed, as at 14, so that when the device is used for the purpose of supporting a car after the regular jack has been removed, the axle or other part may rest within this depressed portion. y

The use of this device for the urpose of blocking a car willbe obvious. he car is to be raised by means ofthe ordinary jack and then this auxiliary jack inserted. beneath the axle or rear axle housing of the car and the regular jack lowered until the car rests upon the blookin or auxiliary jack. Then the auxiliary jac is removed, another por tion of the car is raised, and so on.

One of the main purposes of this inven tion is to provide an auxiliary jack which may be used not only for blocking up a car but as a means for blocking up a jack and thus permit the use of an ordinary and relatively small jack for the purpose of spreading or contracting demountable rims. These rims have a diameter considerably in excess of the length of an ordinary jack even when the latter is extended, and, therefore, the ordinary jack cannot be used for the purpose of contracting or expanding the demountable rims. Special jacks are used for this purpose, which are relatively costly.

The use of this device with the regular jack for the pur ose of spreading a wheel rim is shown in *ig. 3, where the wheel rim is designated A, while the regular jack, which may be of any suitable construction, is designated B. This'regular jack has, of course, a foot Z) at one end and a shiftable shank C having ahead 0. The wheel rim is laid upon the fioor and then the auxiliary jack is disposed, as illustrated in Fig. 3, with its base against one portion of the wheel rim, as for instance, against that portion of the wheel rim where the wheel rim overlaps when it is contracted, and then the regular j aek is dis- :posed with its base 6 against the head of the auxiliary jack. The head 0 of the regular jack is then forced outward against the in side face of the wheel rim B and this is continued until the overlapping ends of the wheel rim are forced past each other or into a position where a few taps with a light hammer will spring the two ends of the rim into place, that is into alinement with each other. Then the rimis locked.

When therim is so small that the head 0 of the regular jack cannot be brought so far inward as to engage the inner face of the rim A, then this inner face of the rim may be engaged by the lug (Z which is usually found'on all regular jacks and which is disposed inward of the head 0, and the same Operation is performed as previously described. WVhere it is-desired to contract the rim, then the same method is used for the purpose of forcing out that portion of the rim which would overlap the opposite end when the rim iscontracted, and as soon as the ends of the rim are forced past each other, the rim will spring inward by its own resilience.

The purpose of having the head and foot of the jack project. out unequally on opposite sides of the standard 10 is to permit the jack to be adjusted so as'to bring this standard directly opposite the middle portion of a wide rim or a narrow rim. Thus, if a narrow rim is to be opened or closed, the parts X'ai'e to be disposed neXt'the floor, thus bringing the standard l0'relatively close to the floor and in the middle of the relatively narrow rim. If, on the other hand, a wide rim is to be sprung open or sprung closed, then the parts Y of the head and base are to be disposed next to the floor. This brings the strain at all times against the ends of the standard so that the jack will resist these strains. If the strain was to one side of the standard, there would bea tendency to break off the projecting portions of the head or base of the jack.

It will be seen that this device is very simple, that it may be cheaply made, and that in conjunction with the regular jack it performs the function of the rather costly and relatively large jack ordinarily used in garages for the purpose of expanding or contracting the demountable rims. At the same time this auxiliary jack may be used for the purpose of blocking up a car or in many other situations and for many other purposes.

I claim As an article of manufacture, an auxiliary jack having a standard I-shaped in cross section and having thereon at one end an integral, relatively flat head projecting in opposite directions beyond the standard and having immediately above the standard a transversely extending depression to receive theaxle of a car, the standard being formed with an integral, flat base parallel to the head, both the head and base extending out on one side of the standard beyond the standard a greater distance than on the opposite side of the standard, and the head and base having the same area, and integral bracing webs disposed at the junction of the standard with the head and base.

In testimony whereof I hereunto afiix my signature.

NEVILLE S. SNYDER. 

